CVE-2025-10137 is a Server-Side Request Forgery (SSRF) vulnerability identified in the Snow Monkey WordPress theme developed by inc2734, affecting all versions up to and including 29.1.5. SSRF vulnerabilities occur when an attacker can abuse a server-side application to send crafted requests to internal or external systems that the server can access but the attacker normally cannot. In this case, the vulnerability resides in the request() function of the Snow Monkey theme, which allows unauthenticated attackers to induce the web application to make arbitrary HTTP requests. This can enable attackers to interact with internal services behind firewalls, potentially querying sensitive information or modifying data if internal services are vulnerable or misconfigured. The vulnerability has a CVSS v3.1 base score of 5.4, indicating a medium severity level. The vector string (AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N) shows that the attack is network-based, requires high attack complexity, no privileges or user interaction, and impacts confidentiality and integrity with a scope change. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability’s impact is primarily on confidentiality and integrity, with no direct availability impact. The SSRF can be leveraged to bypass network segmentation and access internal resources that are otherwise inaccessible externally, which is a common risk in web applications that integrate with internal APIs or services. Given that WordPress is widely used across many organizations, and Snow Monkey is a popular theme, this vulnerability could be exploited in targeted attacks or automated scanning campaigns once exploit code becomes available.

For European organizations, the impact of this SSRF vulnerability can be significant, especially for those relying on WordPress with the Snow Monkey theme for their public-facing websites or intranet portals. The ability for unauthenticated attackers to send arbitrary requests from the server can lead to unauthorized access to internal services, potentially exposing sensitive internal APIs, databases, or configuration endpoints. This can result in data leakage, unauthorized data modification, or further lateral movement within the network. Organizations in sectors such as finance, healthcare, government, and critical infrastructure, which often have strict data protection requirements under GDPR and other regulations, could face compliance violations and reputational damage if internal data is exposed or altered. Additionally, the scope change indicated in the CVSS vector suggests that the vulnerability can affect resources beyond the initially compromised component, increasing the risk of cascading impacts. Although the attack complexity is high, meaning exploitation requires specific conditions or knowledge, the lack of required authentication and user interaction lowers the barrier for attackers. The absence of known exploits in the wild currently reduces immediate risk, but organizations should not delay remediation given the potential severity and the common use of WordPress themes in Europe.

To mitigate this vulnerability effectively, European organizations should: 1) Immediately identify all WordPress installations using the Snow Monkey theme version 29.1.5 or earlier. 2) Monitor official inc2734 and WordPress security advisories for patches or updates addressing CVE-2025-10137 and apply them promptly once available. 3) In the absence of an official patch, consider temporarily disabling or replacing the Snow Monkey theme with a secure alternative to eliminate exposure. 4) Implement strict network segmentation and firewall rules to limit the web server’s ability to initiate outbound requests to internal services, thereby reducing the SSRF attack surface. 5) Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious SSRF patterns targeting the request() function or unusual outbound requests. 6) Conduct internal audits of internal services accessible from the web server to ensure they have proper authentication and authorization controls, minimizing the impact if SSRF is exploited. 7) Enable detailed logging and monitoring of outbound web requests from the WordPress server to detect anomalous activity indicative of SSRF exploitation. 8) Educate web administrators and developers about SSRF risks and secure coding practices to prevent similar vulnerabilities in custom themes or plugins.